A crank and slider mechanism changes straight-line motion into rotation motion. Typically found in piston engines or piston pumps, this design consists of a rod that connects to a rotating driving beam and a sliding body... More »

Centrifugal force increases proportionally with the distance from the axis of rotation. Centrifugal force also increases with the rate of rotation of the axis, though it is proportional to the square of the rate of rotat... More »

Simple machines have few or no moving parts while complex machines are composed of two or more simple machines working together as a single mechanism. Both types of machines make it easier to perform a task. More »

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Because velocity is the rate of motion of an object in a specific direction, either an increase or decrease in the object's speed or a change in its direction of travel causes its velocity to change. This change in veloc... More »

The energy associated with motion is called kinetic energy. All energy comes in two basic forms: potential energy, meaning stored energy, and kinetic energy, meaning the energy of movements. More »

Isaac Newton developed the principles of modern physics through his studies on mathematics, optics and motion. His book "Philosophiae Naturalis Principia Mathematica," or "Mathematical Principles of Natural Philosophy," ... More »

An object with more weight resists any change in its speed and has a greater tendency to maintain its motion. This is because an object with more weight is more massive, and an object that is massive has more inertia tha... More »

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